I use the Valley Enterprises cable with my VX7, it has worked fine. It's designed to fit the Yaesu waterproof port. and https://www.valley-ent.com/store/two-way-radio/programming-cables/yaesu/yaesu-radio-programming-cable-vx-6-vx-7-vx-170.html You can buy it directly from them, or via their store on Amazon. mike, kj6vcp